diff --git a/dist/providers/google-gemini-cli.js b/dist/providers/google-gemini-cli.js
index 93aa26c395e9bd0df64376408a13d15ee9e7cce7..beb585e2f2c13eec3bca98acade761101e4572ff 100644
--- a/dist/providers/google-gemini-cli.js
+++ b/dist/providers/google-gemini-cli.js
@@ -248,6 +248,11 @@ export const streamGoogleGeminiCli = (model, context, options) => {
                         break; // Success, exit retry loop
                     }
                     const errorText = await response.text();
+                    // Fail immediately on 429 for Antigravity to let callers rotate accounts.
+                    // Antigravity rate limits can have very long retry delays (10+ minutes).
+                    if (isAntigravity && response.status === 429) {
+                        throw new Error(`Cloud Code Assist API error (${response.status}): ${errorText}`);
+                    }
                     // Check if retryable
                     if (attempt < MAX_RETRIES && isRetryableError(response.status, errorText)) {
                         // Use server-provided delay or exponential backoff
diff --git a/dist/providers/openai-codex-responses.js b/dist/providers/openai-codex-responses.js
index 188a8294f26fe1bfe3fb298a7f58e4d8eaf2a529..a3aeb6a7ff53bc4f7f44362adb950b2c55455332 100644
--- a/dist/providers/openai-codex-responses.js
+++ b/dist/providers/openai-codex-responses.js
@@ -515,7 +531,7 @@ function convertTools(tools) {
         name: tool.name,
         description: tool.description,
         parameters: tool.parameters,
-        strict: null,
+        strict: false,
     }));
 }
 function mapStopReason(status) {
diff --git a/dist/providers/openai-responses.js b/dist/providers/openai-responses.js
index 7b58a79c989abc76bb8fc9e99fb49126e5fd7de4..a1a7f35ad47975dc1268d1a0c2078b0b651e97b4 100644
--- a/dist/providers/openai-responses.js
+++ b/dist/providers/openai-responses.js
@@ -396,9 +396,10 @@ function convertMessages(model, context) {
         }
         else if (msg.role === "assistant") {
             const output = [];
+            const hasAssistantText = msg.content.some((block) => block.type === "text");
             for (const block of msg.content) {
                 // Do not submit thinking blocks if the completion had an error (i.e. abort)
-                if (block.type === "thinking" && msg.stopReason !== "error") {
+                if (block.type === "thinking" && msg.stopReason !== "error" && hasAssistantText) {
                     if (block.thinkingSignature) {
                         const reasoningItem = JSON.parse(block.thinkingSignature);
                         output.push(reasoningItem);